Why do you think some guys stopped texting me when I put too much effort in but when I didn't, they responded more often?

It seems that when guys stop texting me far too soon, I put too much effort into it. Some guys responded, "I'm sorry I'm too busy.". when i didn't put much into what I texted. i said reply ok. im good. they seem to be reply more. i don't always reply to some guys because they say they're too busy. i make myself look busiers then these men. Why is it happening that i don't seem to bother to reply anymore and find someone who will reply and not be too busy or too lazy.

Why do you think some guys stopped texting me when I put too much effort in but when I didn't, they responded more often?
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